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24. February 2019

DCHP-free peroxide formulation for composite applications

Nouryon (formerly AkzoNobel Specialty Chemicals) has introduced a new dibenzoyl peroxide (BPO) formulation, Perkadox GB-50, to customers in the composites market. GB-50 will replace Perkadox CH-50, a peroxide that is desensitized (or “phlegmatized”) with dicyclohexyl phthalate (DCHP), which the European Union recently reclassified as a category 1B Reproductive Toxin.

According to Nouryon, Perkadox GB-50 maintains the same performance level as its CH-50 predecessor. The new product is phlegmatized with ethylene glycol dibenzoate (EGDB). Perkadox GB-50 will replace Perkadox CH-50 as the go-to curing agent for the markets it serves. Those include use as a curing agent for road markings, flooring, elastomeric roof coatings, adhesives, chemical anchors and other composites. It will be available in the first half of 2019. Nouryon said it is currently expanding capacity at its site in Los Reyes, Mexico, to produce GB-50 and will be able to ship the product all over the world. The expansion is expected to be completed in May 2019.


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